Ventilation grille



FIG. 1 is a bottom perspective view of a ventilation grille of the instant invention;

FIG. 2 is a bottom view of the grille of FIG. 1 ;

FIG. 3 is a left side view of the grille of FIG. 1 ;

FIG. 4 is a right side view of the grille of FIG. 1 ;

FIG. 5 is a front side view of the grille of FIG. 1 , the rear side view being the same;

FIG. 6 is a top side view of the grille of FIG. 1 ;

FIG. 7 is a bottom perspective view of a second ventilation grille of the instant invention;

FIG. 8 is a bottom view of the grille of FIG. 7 ;

FIG. 9 is a left side view of the grille of FIG. 7 ;

FIG. 10 is a right side view of the grille of FIG. 7 ;

FIG. 11 is a front side view of the grille of FIG. 7 , the rear side view being the same; and,

FIG. 12 is a top side view of the grille of FIG. 7 .

The broken lines illustrate portions of the ventilation grille and environmental structure, but do not form part of the claimed design. 

CLAIM The ornamental design for a ventilation grill, as shown and described. 